Install debuggable app via session

When app is installed by session, we should
not see the warning. Test which installs an app
via session is using the non-debuggable app which
causes to return before actually checking the initiating
source.

Test: m PageSizeCompatWarningsTest && atest -c PageSizeCompatWarningsTest
Flag: EXEMPT test_only
Bug: 443089413
Change-Id: I1ad345f709e4743faa63d6934158b664147c0400